I'm wondering if there is any chance I have a cap that fits properly but has the poles in the wrong place?
I know the centrifugal advance is working fine. All is free and lubricated. I also had a timing light on the engine and watched the timing advance as the RPMs increased.
So, I don't know what the heck is going on, and now it's raining and the crawler is sitting outside in a mud-bank.
When the weather clears, I'm going to mark the distributor housing at time of spark. Hopefully I can set the points-gap to put that rotor in the correct place - instead of using factory settings. Factory setting is .022" and spark is happening when that rotor is right in the middle of two poles. If points are set narrower or wider, that rotor position will change. But, this is still weird. I can't figure what could of changed to create this problem. Seems what would be real handy is an adustable rotor - or adjustable cap to get things lined up. You can only mess with point-gap just so much before the dwell-angle gets all screwed up and spark gets weak. I might even do some mods on that cap so I can move its position. That would require moving the lock clips though.
I'm wondering if there's any chance these caps are being made wrong? Or, of somehow I've been getting the wrong caps? I don't thing there's any alternative though.
Crawler is a 1960 John Deere 1010. Distributor is a Delco # 1112577. Cap I've been using is NAPA Echlin RR145. I'm going to go out later and see what the old cap looks like on my 1952 Case DC. It uses the same rotor and probably has the same cap.
Year's ago this crawler was in a fire and the original distribor melted. It was a Delco 1108323. I had to buy another used distribor and that's what I have now. But all the parts I've been buying are listed for the new number I'm using.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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